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A method for constructing a model of a personalized high tibial osteotomy angle matching template

A technology of matching templates and construction methods, applied in the field of medical devices, can solve the problems of fluoroscopy increasing the risk of radiation exposure to patients and doctors, delaying operation time, etc.

Active Publication Date: 2020-06-19
影为医疗科技(上海)有限公司
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  • Abstract
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Problems solved by technology

This method delays the operation time, and at the same time, there are large errors, and too much fluoroscopy increases the risk of radiation exposure to patients and doctors

Method used

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  • A method for constructing a model of a personalized high tibial osteotomy angle matching template
  • A method for constructing a model of a personalized high tibial osteotomy angle matching template
  • A method for constructing a model of a personalized high tibial osteotomy angle matching template

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preparation example Construction

[0044] The second aspect of the present invention provides a method for preparing a personalized high tibial osteotomy angle matching template. Osteotomy angle matching template model to prepare personalized high tibial osteotomy angle matching template. The method for obtaining a matching template according to the model preparation should be known to those skilled in the art, for example, methods such as 3D printing can be used, and the materials used can be photosensitive resins and the like.

[0045] The third aspect of the present invention provides a personalized high tibial osteotomy angle matching template, obtained from the construction method of the personalized high tibial osteotomy angle matching template model, or obtained from the personalized high tibial osteotomy angle Prepared by matching template preparation method.

[0046] The fourth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when ...

Embodiment 1

[0051] The matching template coordinate system is established:

[0052] The coordinate system for building measurement blocks consists of three mutually orthogonal directions and an origin, such as image 3 shown. The origin of the coordinate system is the tibial rotation hinge point. Its position (in the X-axis direction) is 8mm from the proximal end of the fibula, and (in the Z-axis direction) is 12mm from the tibial plateau. The direction of the Y axis is defined as the direction of the coronal plane under the patient's weight-bearing position, and the direction of the Z axis is defined as the projection direction of the direction vector formed by the center of the ankle joint pointing to the center of the knee joint on the coronal plane. The X-axis direction is a direction orthogonal to the Y-axis and the Z-axis. The center of the knee can be referenced to the center of the tibial plateau, and the center of the ankle can be referenced to the center of the talus.

[005...

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Abstract

The invention relates to the field of medical instruments, in particular to a method for constructing a model of a personalized high tibial osteotomy angle matching template. The method for constructing the model of the personalized high tibial osteotomy angle matching template comprises the steps that a first outer side reference point and a second outer side reference point are obtained; a firstinner side reference point is obtained; a second inner side reference point is obtained; a first reference plane is obtained; a second reference plane is obtained; a body model of the matching template is constructed; a hold part is built. The construction method is based on the three-dimensional model obtained through preoperative scanning CT reconstruction of a patient, the personalized high tibial osteotomy angle matching template constructed through the construction method after 3D printing can be used for increasing the angle after tibial cutting, and therefore errors in the operation process can be effectively avoided. Besides, operation time can be greatly saved, and the method has a good industrialization prospect.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a method for constructing a model of a personalized high tibial osteotomy angle matching template. Background technique [0002] High tibial osteotomy is used to treat diseases such as osteoarthritis caused by genu varus. After the osteotomy is completed, it is necessary to rotate the tibia to the position of the target line of force to balance the gravity transmitted from the inside and outside of the knee joint, such as figure 1 shown. However, the doctor lacks convenient guidance on where the tibia should be rotated during the operation. At present, the common clinical method is to gradually rotate to the ideal position through multiple perspectives during the operation. This method delays the operation time, and there is a large error at the same time, and too much fluoroscopy increases the risk of radiation exposure of the patient and the doctor. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B34/10G06T17/00
CPCA61B34/10A61B2034/105A61B2034/108G06T17/00
Inventor 汪轶平黎兴封晓宇李建波
Owner 影为医疗科技(上海)有限公司
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